Thumbnails for UJAM plug-ins are missing in Native Instruments apps like KOMPLETE KONTROL and MASCHINE

For UJAM plug-ins that support NKS, graphic files are stored in the following location (using Groovemate ONE as an example):

• Macintosh HD/Library/Application Support/UJAM/GM-ONE/NKS/PAResources/image/ujam/gm-one

Possible solutions: 

1. Reinstall the UJAM plug-in by selecting Reinstall to the right of the plug-in in the UJAM App (or running the standalone installer).
2. If reinstalling the UJAM plug-in doesn't solve the problem, try resetting the NI thumbnails following the instructions from Native Instruments.